PYQ Vault

Day 113: MHT-CET Physics

5 questions. Try each one first, then open its answer.

  1. Question 1

    Dual Nature of Radiation and Matter. Asked 2 times: 21 Apr 2025 S1, 14 May 2026 S1 See all 2 times it was asked

    145
    The de-Broglie wavelength λ\lambda of a particle

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  2. Question 2

    Semiconductor Devices. Asked 2 times: 19 Apr 2025 S1, 14 May 2026 S1 See all 2 times it was asked

    148
    In the middle of the depletion region of reversed biased p-n junction the

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  3. Question 3

    Semiconductor Devices. Asked 2 times: 17 Apr 2026 S2, 14 May 2026 S1 See all 2 times it was asked

    149
    β\beta, RLR_L and rr are the a.c. current gain, load resistance and the input resistance of a transistor respectively in common emitter configuration, the voltage gain and the power gain are respectively

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  4. Question 4

    Structure of Atoms and Nuclei. Asked 2 times: 20 Apr 2026 S2*, 14 May 2026 S1 (* = numbers or wording changed that year) See all 2 times it was asked

    147
    Activity of a radioactive sample decreases to (13)rd\left(\dfrac{1}{3}\right)^{rd} of its original value in 33 days. Then in 99 days its activity will become

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  5. Question 5

    Thermal Properties of Matter. Asked 2 times: 23 Apr 2025 S1*, 14 May 2026 S1 (* = numbers or wording changed that year) See all 2 times it was asked

    112
    The coefficient of volume expansion of mercury is 18×10−5/∘C18 \times 10^{-5}/^\circ\mathrm{C}. A thermometer bulb has volume 10−6 m310^{-6}\ \mathrm{m^3} and cross-section of stem is 0.004 cm20.004\ \mathrm{cm^2}. Assuming bulb is filled with mercury at 0∘C0^\circ\mathrm{C} then the mercury column at 100∘C100^\circ\mathrm{C} is

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